[Sam Buchanan]

This may be old news but is something I just became aware of. The 2016 edition of the FAA's comprehensive manual is available for download:

download the pdf

This is a good reference for all pilots to keep handy, especially those of us whose hard drives are getting a little glitchy due to high mileage.

 

[Ironflight]

An update to a classic - thanks Sam!

 

[Ralph Inkster]

Excellent reference to have, even for those pilots speaking Canadjan!

 

[apirkle]

They have a whole library of PDFs here. Instrument Flying Handbook, among others -
https://www.faa.gov/regulations_policies/handbooks_manuals/aviation/